He's followed his boss's lead and tendered his own resignation, effective January 27. Not to say the committee is hot on his trail, but they subponeaed him for testimony this coming Tuesday, by deposition.

UPDATE: here's Issa's letter. It has very strong language. You cancelled your voluntary appearance today. So a subpoena is on the way, requiring you to appear in Washington on 72 hour's notice. By the way, the offer your attorney made is what might be expected from an indicted defendant trying to plea bargain, and unacceptable to the committee.